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Billings

$131+ Cheap flights from Ontario to Billings (ONT - BIL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIL
Mar 20 — Mar 271
Fri 3/20
Fri 3/27
1 adult, Economy
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Cheap flight deals from Ontario to Billings

Cheapest flights from Ontario to Billings
Explore the most affordable flight options available from Ontario to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:22 pm
ONT
-
BIL
1 stop12h 47m
Multiple Airlines
Mon 3/99:59 am
BIL
-
ONT
1 stop6h 38m
Multiple Airlines
Deal found 2/17$257
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:00 am
ONT
-
BIL
1 stop3h 53m
Delta
Wed 4/156:18 pm
BIL
-
ONT
1 stop6h 26m
Delta
Deal found 2/17$261
This Delta deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/146:00 am
ONT
-
BIL
1 stop3h 53m
Delta
Sat 3/216:21 pm
BIL
-
ONT
1 stop5h 27m
Delta
Deal found 2/14$277
This Alaska Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
ONT
-
BIL
1 stop16h 58m
Alaska Airlines
Sun 4/197:56 am
BIL
-
ONT
1 stop26h 43m
Alaska Airlines
Deal found 2/16$283
This Alaska Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:00 pm
ONT
-
BIL
1 stop7h 08m
Alaska Airlines
Sat 8/296:00 am
BIL
-
ONT
1 stop6h 09m
Alaska Airlines
Deal found 2/16$305
This Alaska Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:14 am
ONT
-
BIL
1 stop16h 24m
Alaska Airlines
Mon 3/237:56 am
BIL
-
ONT
1 stop26h 43m
Alaska Airlines
Deal found 2/16$333
This Delta deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:00 pm
ONT
-
BIL
1 stop3h 48m
Delta
Fri 7/175:45 am
BIL
-
ONT
1 stop4h 16m
Delta
Deal found 2/16$340
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:00 am
ONT
-
BIL
1 stop3h 54m
Delta
Mon 5/255:35 am
BIL
-
ONT
1 stop4h 18m
Delta
Deal found 2/17$349
This Delta deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:00 am
ONT
-
BIL
1 stop4h 00m
Delta
Thu 3/56:15 pm
BIL
-
ONT
1 stop6h 34m
Delta
Deal found 2/14$356
This United Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:00 am
ONT
-
BIL
1 stop7h 23m
United Airlines
Sat 3/72:35 pm
BIL
-
ONT
1 stop7h 15m
United Airlines
Deal found 2/16$371
This Delta deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:00 am
ONT
-
BIL
1 stop4h 00m
Delta
Sat 3/711:45 am
BIL
-
ONT
2 stops11h 52m
Delta
Deal found 2/16$376

Find flight deals from Ontario to Billings

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Billings (BIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$257
(Kiwi.com)

One-way from

$131
(Delta)

Popular in

March

Cheapest in

April

Average price

$337
Provider with most accurate pricing for Ontario-Billings Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Billings Logan Intl flights.
Search Deals
From Ontario to Billings Logan Intl
Search Deals
One-way flight from Ontario to Billings Logan Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Billings that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 18, 2026.
Use the filters below to find and compare flights from Ontario to Billings that are best for you.

Fly from

Ontario

Fly to

Billings

Route

Depart

Return

Price

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 3/5

7:22 pm-9:09 am

1 stop12h 47m

Billings Logan Intl

Mon 3/9

9:59 am-3:37 pm

1 stop6h 38m

$257

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 6/2

4:58 pm-10:52 pm

1 stop4h 54m

Billings Logan Intl

Mon 6/8

5:45 am-9:01 am

1 stop4h 16m

$261

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sat 3/14

6:00 am-10:53 am

1 stop3h 53m

Billings Logan Intl

Sat 3/21

6:21 pm-10:48 pm

1 stop5h 27m

$277

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/15

6:00 am-11:58 pm

1 stop16h 58m

Billings Logan Intl

Sun 4/19

7:56 am-9:39 am

1 stop26h 43m

$283

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 7/14

9:55 am-5:48 pm

1 stop6h 53m

Billings Logan Intl

Fri 7/17

5:45 am-9:01 am

1 stop4h 16m

$340

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sun 3/1

6:00 am-11:00 am

1 stop4h 00m

Billings Logan Intl

Thu 3/5

6:15 pm-11:49 pm

1 stop6h 34m

$356

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 3/3

5:00 am-1:23 pm

1 stop7h 23m

Billings Logan Intl

Sat 3/7

2:35 pm-8:50 pm

1 stop7h 15m

$371

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 3/16

9:37 am-11:38 pm

2 stops37h 01m

Billings Logan Intl

Mon 3/23

7:56 am-9:39 am

1 stop26h 43m

$371

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 3/3

6:00 am-11:00 am

1 stop4h 00m

Billings Logan Intl

Sat 3/7

11:45 am-10:37 pm

2 stops11h 52m

$376

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 6/2

4:03 pm-11:33 pm

1 stop6h 30m

Billings Logan Intl

Mon 6/8

7:21 pm-10:21 am

2 stops16h 00m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Ontario to Billings

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Billings in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Billings flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Billings flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Billings flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Billings flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Billings flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Billings

Have a flexible travel schedule? Discover the best time to fly to Billings from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Billings

What is the cheapest month to book a flight from Ontario to Billings?

Currently, August is the cheapest month in which you can book a flight from Ontario to Billings (average of $120). Flying from Ontario to Billings in January is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Billings

Get insights into the airlines that provide service to Billings. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Billings. Reviews last updated February 18, 2026.
Read through reviews of airlines operating flights from Ontario to Billings, such as Alaska Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,897 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,897 reviews
Alaska Airlines
8.0
Very good
11,897 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,208 reviews
Alaska Airlines
8.0
Very good
11,897 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,315 reviews
Alaska Airlines
8.0
Very good
11,897 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Related info for your journey

Find useful and relevant information for your journey from Ontario to Billings. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Billings?

    Departing from Ontario to Billings will take you 4h 54m. The distance from Ontario to Billings is about 941 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Billings round-trip?

    Currently priced at $263, Delta will fly you from Ontario to Billings and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Alaska Airlines - these airlines can fly you to your destination from $270 and $284, respectively. Delta is currently priced 28% below the average price you’ll pay for this route.

  • Can I find deals for flights from Ontario to Billings that include hotel bookings?

    Yes. In addition to deals on Ontario to Billings flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Billings?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Billings.

  • Can I find deals for business class flights from Ontario to Billings?

    Yes. Cheapflights offers flight deals from Ontario to Billings by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Billings?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Billings (average of $120). Flying from Ontario to Billings in January is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Ontario to Billings

Discover the top 3 airlines that operate flights from Ontario to Billings. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$263Average$349FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$270Average$398FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$284Average$504FlexibilityNo cancel feeOn-time75%

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